OpenStreetMap

has the highway a bridge, or the waterway a culvert?

highway and waterway at same layer. Is this a ford, or should it be a bridge or culvert?

I've just added Elk Creek and West Fork Elk Creek to the map, based on a hike (https://www.oregon.gov/ODF/Documents/Recreation/Kings_Mtn_Elk_Mtn_Trail_v2009.pdf).

However, I'm a bit confused here.
Does anybody understand why the road going Northwest from here is called 'Elk Creek Road' and the road going northeast 'West Fork Elk Creek Road' while is located on the east side. Additionally, the forks of the Elk Creek coming from Northwest to here is called West Fork Elk Creek and the fork coming from east is called Elk Creek (the main fork). Thus the creek naming contradicts the road naming.

Does anybody have an explanation for this?

This matches with the given of USGS Topo map.
https://viewer.nationalmap.gov/basic/?basemap=b1&category=ustopo&title=US%20Topo%20Download

The RCN66 route relation seems a bit messed up in Wettingen.

The super-relation for rcn66, that contains the relations for etappe 1 and 2, also contains ways that belong to Etappe 2.
https://www.openstreetmap.org/relation/28044

Etappe 2, is not complete, it has some missing parts at the same place.
https://www.openstreetmap.org/relation/28060

This seems not correct to me, but I would like to discuss how to solve this.

Is the correct action to move the ways in the super-relation to the Etappe 2 relation?